Add a presubmit script and pylintrc for content/test/gpu

content/test/gpu/gpu_tests/context_lost.py

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 import os
 import time
 
-import context_lost_expectations
-import gpu_test_base
-import path_util
+from gpu_tests import context_lost_expectations
+from gpu_tests import gpu_test_base
+from gpu_tests import path_util
 
 from telemetry.core import exceptions
 from telemetry.core import util
 from telemetry.page import page_test
 from telemetry.story import story_set as story_set_module
 
 data_path = os.path.join(
     path_util.GetChromiumSrcDir(), 'content', 'test', 'data', 'gpu')
 
 wait_timeout = 60  # seconds
@@ skipping 60 matching lines @@
       # same page's context -- is much more stressful than restarting
       # the browser every time.
       for x in range(page.number_of_gpu_process_kills):
         if not tab.browser.supports_tab_control:
           raise page_test.Failure('Browser must support tab control')
 
         expected_kills = x + 1
 
         # Reset the test's state.
         tab.EvaluateJavaScript(
-          'window.domAutomationController.reset()');
+          'window.domAutomationController.reset()')
 
         # If we're running the GPU process crash test, we need the
         # test to have fully reset before crashing the GPU process.
         if page.check_crash_count:
           util.WaitFor(lambda: tab.EvaluateJavaScript(
               'window.domAutomationController._finished'), wait_timeout)
 
         # Crash the GPU process.
         gpucrash_tab = tab.browser.tabs.New()
         # To access these debug URLs from Telemetry, they have to be
@@ skipping 248 matching lines @@
         ps, ps.base_dir, self.GetExpectations()))
     ps.AddStory(WebGLContextLostFromLoseContextExtensionPage(
         ps, ps.base_dir, self.GetExpectations()))
     ps.AddStory(WebGLContextLostFromQuantityPage(
         ps, ps.base_dir, self.GetExpectations()))
     ps.AddStory(WebGLContextLostFromSelectElementPage(
         ps, ps.base_dir, self.GetExpectations()))
     ps.AddStory(WebGLContextLostInHiddenTabPage(
         ps, ps.base_dir, self.GetExpectations()))
     return ps